Indicator



H. FRIEDMAN May '12-, 1 925..

mmcu R Filed July 24, 1924 Patented May 12,1925.

UNITED g ins HARRY rainniimn, or rirrrn, onto.

INDICATOR.

Application filed 5111;: 2a, was. Serial No. 728,037.

To all whom it may concern! Be it known that I, HARRY Fnninrniif, 'itizen ot' the United States, and a. resident of Titlin, in the county of Seneca and State of Ohio have invented a new and useful Indicator, which invention is fully described in the following specification My invention has for itsobject to provide an indicating means for indicating any con- (lit-ions that may arise in connection with any combination of circumstances, as in games or ideas of fact or imagination, and which may be numerically or alphabetically designated or designated by any other indicia or set phrases.

The invention may be contained in structures of different forms. To illustrate a practical application of the invention I have selected a structure containing the invention and shall describe it hereinafter, 'The structure selected for purposesof illustration is shown in the accompanying drawings:

Figure 1 of the drawings is a top View of the device containing my invention Figure 2 1S an end view and Figure 3 1s a broken view of a disc, on wh ch may be printed or written suitable indicating or designating terms ornumbers or phrases.

The device shown in the drawing isfsupported on the table 1. It is provided with a ring. 2 of iron that is mounted in spaced re lation with respect to the table top by means of the blocks or legs 8. The battery 4, that may be formed of dry cells 5 of the type well known inthe art, is connected to a wire 6 that is supported on posts 7. The posts 7 may be formed of electricity conducting material such as metahwhile the tabletop 8 may be'formed of wood or fibre or other suitable material. that willoperate to insulate the posts 7 The posts 7 are also connected to the blocks orlegs 3 by means of wires 9.

The blocks 3 are also formed of electricity conducting material and consequently the iron ring 2- is connected at a plurality of points to the wire 6 that connects the posts 7, which are located in the corners of the table 1. The table top 8 is preferably square in torin and the diameter of the ring 2 is substantially the saine'as the width or length of the table, and so that portions of the Wire 6 located between the posts 7 will'be located partly without the outer cylindrical. surface of thering to within, substantially, the inner cylindrical surface of the ring. The posts, however, support the wire so that it lies ring, because of the difference in the relative positions between the parts of the ring and portions of the wire. The ring being formed of? iron and although it is of considerable size, produces considerable resistance to the flow of the current through the ringitself instead of through portions of the wire 6,

The wire 6 is tormedot'copper and is comparatively a. large wire and consequently has a low resistance, a much lower resistance than that of the ring 2. i

A rotatable member 10 maybe pivotally supported by means of a spindlell that-is located in the center of the ring 2v The member 101s providedwith net 12 having progecting legs 13 that are surrounded by the coil 14 and so as to produce an electromag the same polarity in the ends of the legs 13.

It desired themagnet 12 maybe formed horseshoe shaped and the coil 1e secured about the magnet. If the core ofthe magnet is made horseshoe shaped it may be supported on the rotatable memberlO so that the legs will be located on opposite sides of the ring 2, that is, one will be located on the inside of the ring and the other will be located on the outside. The rotatable member may be loaded by means ot' suitable inetah such as by means of the plate or block 15, in order to counterbalance the weight of v the magnet 12. a

The coil. 14; of the magnet 12 is connected to the spindle 11 by means of the wire 16, and the spindle is connected to the. battery 4t by means of the wire 17. Also, the coil 14 is connected to a spring contact 18 that may be secured to one of the legs 13 of the magnet and which makes sliding contact with-the ring 2. Thus a branch circuit of variable resistance 1s formed between the terminals of the battery e as the member 10 l is rotated on the spindle 11. This produces a varying current through the coil 14 and produces a variable magnetic drag between the ring 2 and the magnet 12. This magnetic drag also is varied by the change in relation between portions of the ring 2 and portions of the wire 6, which produces slight variation in the field induced in the ring 2, which to a corresponding degree will affect the magnetic drag on the magnet 12. This variation of the magnetic drag on the magnet 12 will affect the rotation of the member when the member 10 is caused to whirl. Also as the contact 18 is moved over the surface of the ring 2, it approaches and recedes from the points at which the ring is connected with the wire 6, and consequently the intensity of our nt that passes through the roil 14 will v: which will vary the magnetism of the legs 1.3 of the magnet. This variable drag between the ring 2 and the magnet 12 will produce unexpected results when the rate of rotation of the member 10 becomes very slow, and will bring the rotatable member at unexpected positions of rest or unexpected stationary positions. In order to produce a pronounced local field, an clectroinaget 20 may be located in the circuit of the wire 6. If desired, this magnet may be constructed substantially the same as the magnet 12, it being provided with a coil 21 that is connected to the battery 4 by the wire 22 and the wire 6.

The relative positions for starting the rotation of the member 10 or for designating its positionsof rest after rotations of the member, may be made more definite by the use of a disc 24. having lines thereon to subdivide it into sectors. The sectors may be designated by any suitable members or other indicia or phrases, according to the use to which the invention is to be put, that is, the sectors may be designated by the names of the different cards of a deck or by letters, or each sector may receive a particular instruction or supposed information. The designating indicia or the markings and phrases used in the sectors may be varied'as desired. In order to more definitely s indicate the position of the rotatable member when at rest, the plate 15 may be marked or grooved along the line 26. This may be sighted with reference to division lines of the disc 2% by the eye, to determine more exactly the relative position of the rotatable member 10 as at the completion of rotation of the member 10 when it comes to a point of rest.

I claim 1. In an indicator, a ring of magnetic material, a rotatable member, a magnet supported on the rotatable member and in'magnetic relation to the ring, and means for producing a variable field along the ring.

2. In an indicator, ring of magnetic material, a rotatable member, a magnet supported on the rotatable membe and in magnetic relation to the ring, and means for producing a variable field in the magnet.

3. In an indicator, a ring of magnetic ma: terial, a rotatable member, a magnet supported on the rotatable member and in magnetic relation to the ring, means for producing a variable field along the ring, and means for producing a variable field in the magnet.

st. In an indicator, a table, a ring of mag netic material supported on the table, a source of electric current. a wire having portions extendingjn straight lines across portions of the ring and connectedto the source of current, a rotatable member, a magnet supported on the rotatable member and having a coil connected to one terminal of the source of current and the other terminal connected to the ring, the ring connected to the wire at a plurality of points.

5. In an indicator, a ring of magnetic material, a rotatable member, a magnet supported on the rotatable member and in magnetic relation to the ring, and means for producing a variable field along the ring, a disc having designating characters located in subdivisions of the disc and positioned in indicative relation to the rotatable member. 6. In an indicator, a ring of magnetic material, a rotatable member, a magnet supported on the rotatable member and in magnetic relation to the ring, means for producing a variable field along the ring and means for producing a variable field in the magnet, a disc having designating charac ters located in subdivisions of the disc and positioned in indicative relation to the rotatable member. 1

7. In an indicator, a table, a ring of magnetic material supported on the table. a source of electric current, a wire having portions extending in straight lines across portions of the ring and connected to the source of current, a rotatable member, a magnet supported on the rotatable member and having a coil connected to one terminal of the source of current and the other terminal connected to the ring, the ring connected to the wire at a plurality of points, a disc having designating characters located in subdivisions of the disc and positioned in indicative relation to the rotatable member. In testlmony whereof I have hereunto signed my name to th1s specification;

HARRY FRIEDMAN. 

